SEARCH Articles Figures Tables Application of the Ritz method Approximation methods Ritz method Method Rayleigh-Ritz approximation Quantum chemistry Ritz method Rayleigh Ritz energy method Rayleigh-Ritz method Rayleigh-Ritz variational method Ritz variation method Schrodinger equation Ritz method The Rayleigh-Ritz method for Dirac Hamiltonians